. >> at the united nations president obama used the world stage to decry recent u.s. attacks. >> they were attacks on america and should be no doubt we'll be relentless in tracking down killers and bringing them to justice. >> mitt romney hammer the president as what he characterized as the president's response. >> he said the development are bumps in the road. that is my reaction. bumps in the road? we had an ambassador assassinated. >> and we must reaffirm our future will be determined by people like chris stevens and not his killers. >> and then, added this lesson intolerance. >> and we do not ban blaspheme. i expect people gorg call me awful things every day? >> and i will defend their right to do so. >> this g.o.p. challenger did not repeat his criticism over the bumps in the road and instead, insin yu yaited the president has not done enough. >> our ambassador was assassinated in a terrorist attack. and we saw how it work at the mercy of events. and at usf, this expert says the television coverage of the riots in the middle east make unrest appear larger than it